Mounting for sound-boxes.



(1. L. 001111111111. MOUNTING FOB SOUND BOXES.

APPLIOU I'IOI FILED IAN.29,1906.

Patented .1111 11, 1910.

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-and useful Improvements in Mountings for-- v sound box, whereby thevibratory action of.

UNITED S ES PATENT OFFICE,

GEORGE L. COLEMAN, OF CAMDEN, NEW.-TEBSIY, ASSIGNOB "1'0 VIC!OB TALKINGv -IACHINE COMPANY, A CORPORATION 02 NEW JERSEY.

'noun'rnm ron sommsnoxxs,

To all whom it may concern:

Be it known that I GEORGE L. a citizen of the United States, Camden, inthe county of Camden and State of New Jersey, have invented certain newCOLEMAN,

Sound-Boxes, of which thefollowing is a full, clear, and completedisclosure. 7 My invention relates to certain improvements in sound.recording and reproducing devices, and'more particularly to that part ofthe same known as sound boxes.

The object of my invention is to provide a means for mounting adiaphragm inithe sound boxes in such a manner that the volume is greaterand quality of the tone is much clearer and more distinct and naturalthan heretofore rendered.

With this object in view, my invention consists in providing asimple'and efficient-I meansfor securing the diaphragmin the I thediaphragm: is renderedmore eflicient and the diaphragm more sensitive tothe action of the sound waves and movement of the .stylus bar. 1

My invention further consists in features of construction "and-manner ofoperation which will be hereinafter more fully described in thefollowing specification and the accompanying drawing, in which-likereference characters refer to corresponding parts. I I

. In the drawing, Figure 1 is atransverse section of the sound box,showing'the needle andwpart of the stylus bar in elevation; Fig. 2 is anenlarged fragmentary portion of Fig. 1 Fig. 3 is an elevation of one ofmy gasket ruigs. eferringoto land 2, 1 represents the sound x frame,which is made up of the sectionsl and 2, the cylindrical wall of thelatter beingslipped over the cylindrical wall of the former. The section2 is provided on its interior surface with a step or seat for thereception of one of the rings or gaskets 3. Section 1 has its upperperiphery constructed in the form of an annular seat for the receptionofthe other rings or mountings 3. These rings or gaskets are composed ofa soft rubber or other yieldingmaterial and may be resilient, so that intheir normal condition they are of such a configuration as to conform totheir bearing surfaces in the sound box, from which they Specificationof fitters rmm.

residing in V sharp or knife-like,

may be removed when Thesaid V v lfatentcd Jan. 11, 1910. f Applicationfiled January 29, 1906. Serial No. 298,878.

ing against their respective seats and their edges oppositely disposedfor the purpose of retaining the diaphragm 4 in positlon. Con,-

nected with the diaphragm in any suitable manner is the stylus bar 5,and to the face of section 1 of the box is attached the usual rubberring 6, within which is the tubular sleeve 7 for attachment to the hornand supporting the arm of the reproducing machine. The oppositelydisposed circular edges of the mounting rings 3-3 maybe but I prefer toslightly round or bevel the same. The diaphragm 4 is confined betweenthese circumferential edges, and is in slight contact around thatportion of its edges within and adjacent to its periphery. The sections1 and 2 of the sound box may be so adjusted to each other as to brin thecircumferential edges of therings 33 into contact with the diaphragm,according to the tension required.

Although I have described my rings as be ing detachable and having theircircumferential edges in contact with the diaphragm,

this arrangement is not essential, as the said yielding portions may bein ral with the sound box, or the circumferentlal edges may be incontact with the said box instead of the diaphragm, provided thatthoseparts of the rings between which the diaphragm 1s supported are incontact with that portion thereof which is withinand ad'aoent;to itsperiphery, and further, I have escribed the annular mountings or ringsas triangular in cross section, but the same may be I of any otherconfiguration in cross section,

provided circumferential edges of contact are presented.

It will be seen, from the above description, that the diaphragm is freeat its ed sand that the only portions of the same t at are in contactare those that lie immediately between the edges ofthe yieldin rings andby virtue of the yielding action 0 the rings and the circumferentialnature of'the contact, the interference with the vibratory action of thediaphragm isreduced to a minimum.-

The above described means for mounting the diaphragm is illustrated inits preferre form, but I do not wish to limit myself to such, as otherforms may be employed without departing from my invention as clalmed.

Neither do I wish to be restricted by the terms used to describe thedifferent parts set forth, nor by the exact construction hereinillustrated and described, .but reserve the right to utilize anymodification or equivalents thereof, provided the same are within thescope of my invention, as pointed out in the appended claims.

Having thus described my invention, what I claim and desire to protectby Letters Patent of the United States is 1. In a sound recording andreproducing machine, the combination of a pair of soft yielding rings,triangular in cross section, with a diaphragm retained between them, theedge of said diaphragm being free.

2. In a sound recording and reproducing machine, the combination with acasing of soft yielding rings, triangular in cross section andoppositely disposed, with a diaphragm retained between said rings,theedge of said diaphragm being free.

3. In a sound box, a pair of soft yielding rin s, each having one facethereof tapered to form an edge and a diaphragm retained between saidedges, the edge of said diaphragm being free. 4

4. In a sound box, a pair of soft yielding rings, each having one facethereof tapered to form an edge and its opposite facing flat to conformto a seat, and a diaphragm retained between said rings, the edge of saiddiaphragm being free. I

5. In a sound box, a pair of yielding rings of soft material each havingone face thereof tapering to form an edge and a diaphragm retainedbetween said edges.

6. In a sound box, a pair of yielding rings, made of solid soft rubberor a like composition, each having one face thereof tapered to form anedge and a diaphragm retained between said edges.

7. In a sound box a-pair of rings made of solid soft rubber or a similarcomposition, and being triangular in cross section, and a diaphragmretained between said rings.

8. In a sound box, a pair of solid soft rings, each having one facethc.eof tapered to form an edge, and a diaphragm retained between saidedges.

9. In a sound box, a pair of solid soft resilient rings, each having oneface thereof tapered to form an edge and a diaphragm. retained betweensaid edges.

10. A sound box made up insections, one section having an annular seator shoulder therein and another section having a corresponding seat, apair of soft yielding rings each having one face thereof tapered to forman edge and its opposite face flat and bearing against one of saidseats, and a diaphragm retained between the edges of said rings, saidsections being longitudinally slidable with respect to each other.

11. A sound box made up in sections, one section having an annular seator shoulder therein and another section having a corresponding seat, apair. of soft rubber rings, each having one face thereof tapered to forman edge and its opposite face flat and hearing against one of saidseats, and a diaphragm retained between the edges of said rings, saidsections being longitudinally slidable with respect to each other.

12. A sound box made up in sections, one section having an annular seator shoulder therein and another section having a corresponding seat, apair of soft solid rubber rings, each having one faeethereof tapered toform an edge and its opposite face flat and bearing against one of saidseats, and a diaphragm retained between the edges of said rings, saidsections being longitudinally slidable with respect to each other.

13. In a sound box a pair of yielding portions of soft material, eachportion being tapered to form an edge and a diaphragm held between saidedges.

14L. In a sound box a pair of yielding portions of soft material, eachportion being tapered to form an edge, and a diaphragm held between saidedges, the edge of said diaphragm being free.

15. In a sound box a pair of yielding portions of soft material and adiaphragm held between the said portions, each portion beingsubstantially V-shaped in cross section and converging toward saiddiaphragm.

16. In a sound box the combination with a casing'of a yielding tubularextension secured to the rear side thereof and a nonyielding lining insaid yielding tubular extension, the inner edge of said lining being incontact with the rear side of said casin and the outer edge ofsaid'lining being flus with the rear face of said extension.

In witness whereof I have hereunto set my hand this twenty-sixth day ofJanuary, 1906.

GEORGE L. COLEMAN.

Witnesses:

VVM. EARLY, CHAS. K. -BENNETT.

